ASTM D – Free download as PDF File .pdf), Text File .txt) or read online for free. New ASTM Method D With the manufacture of Freon banned by the Montreal Protocol in , the old ASTM method (D ) that used infrared. The FT-IR Environmental Hydrocarbons ASTM D Application Pack contains all of the resources and components necessary to perform efficient analysis of.
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Other labs used AK with no issues, indicating the use of AK is dependent on the type and model of IR instrument used. If calibration is not veri? It is desirable to? If the percent recovery is not within these limits, a matrix interference may be present in the sample selected v7066 spiking. In the procedure below, the IR instrument is calibrated from 0.
Those not adsorbed are measured as nonpolar material. Current edition approved June 1, The extract is diluted to 50mL and a portion ast, examined by infrared spectroscopy IR for an oil and grease measurement.
Due to the asgm of performing the analysis, each matrix tested contained only one set of Youden pair concentrations. If the sample is to be shipped by commercial carrier, U. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine D Guide for Sstm Laboratory Practices2 the applicability of regulatory limitations prior to use. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
The high probability that extractable matter may adhere to sampling equipment and result in measurements that are biased low precludes the collection of composite samples for determination of oil and grease. The test blank must be taken through all of the steps of the analytical method including sample preservation and pretreatment. Cap the bottle and shake well. However, d066 amount may be insufficient for some samples. If the amount of acid required is not known, make the pH measurement on a separate sample that will not be analyzed.
Rinse the tip of d066 separatory funnel, Na2SO4,? Spike an aliquot of the sample with a known 6 Where: Pour the solvent into the separatory funnel, rinsing down the sides of the transfer funnel.
Mix equal volumes of concentrated HCl and water 8. If the IR instrument cannot be calibrated to 0. Use the entire sample because removing a portion would not apportion the oil and grease that adheres to the bottle surfaces.
Also, in relation to infrared? Either the average calibration factor CFm or the calibration curve is used, not both.
Scan as in A number in parentheses awtm the year of last reapproval. L of isooctane by the water volume in liters. Powdered sodium sulfate should not be used because water may cause it to solidify.
The data presented here is for reference or information only and may be useful if another interlaboratory method validation study is performed. Cap with the original cap and shake the sample bottle to rinse all interior surfaces.
If such an emulsion cannot be broken by any attempted means, the test method is not applicable to the problem sample.
Be sure to record the concentration added to the LCS. Similarly, this test method de?
If the result is axtm within these limits, analysis of samples is halted until the problem is corrected, and either all samples in the batch must be reanalyzed, or the results must be quali? Spiking solution section Quality Control QC In order to be certain that analytical values obtained using this test method are valid and accurate within the con?
ASTM D – standard test method by Infrared Determination
The replicates may be interspersed with samples. A superscript epsilon e indicates an editorial change since the last revision or reapproval. D — 04 Be sure to record the concentration added to each replicate. Introduction of pH d706 to an actual sample or sample cap may remove some oil from the sample.
Vent the funnel slowly to prevent loss of sample. If the sodium sulfate cakes when contacted with the extract,? The same cell or matched cells should be used throughout the calibration. NOTE 4—For infrared instruments having computer capability, data may be obtained v7066 or as described in It is highly recommended that calibration standards be prepared on a weight basis i.
FT-IR Environmental Hydrocarbons ASTM D7066 Analysis Pack
One laboratory disposed of its samples before performing the non-polar analysis. Calculate the percent recovery of the LCS using the following equation: Keep a record of each dilution for use in As discussed in Section 11, the concentrations of these standards can be adjusted to stay within the linear range of the IR instrument.
The matrix and chemistry of the solution should be equivalent to the solution used in the collaborative study.
Fill bottle with minimal headspace to prevent loss of volatile constituants. Precision and Bias